How to contact a RAKsmart customer to submit a work order

RAKsmart The merchants provide Chinese customer service, which can be easily solved for us to contact customer service. At present, the official provides work order and QQ consultation. Generally, the latter is online, which is 7 * 24. However, the safe way is to contact work order+QQ together. If there is an emergency, this can be done. How to submit a work order here?

Here we log in to the background, see the support, and then click the new work order.

Here we can select departments, and we need to see the working hours. The work order can be submitted in Chinese.